<?xml version="1.0" encoding="UTF-8"?><!--*** Generated from internal PANGAEA metadata schema by dif.xslt ***--><DIF xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.4.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/">
<Entry_ID>PANGAEA_973697</Entry_ID>
<Entry_Title>Qualitative productivity interpolated on ODP Hole 112-680A, Peruvian Margin</Entry_Title>
<Data_Set_Citation>
<Dataset_Creator>Fraga-Ferreira, Paula Luiza</Dataset_Creator>
<Dataset_Title>Qualitative productivity interpolated on ODP Hole 112-680A, Peruvian Margin</Dataset_Title>
<Dataset_Release_Date>2024-12-03</Dataset_Release_Date>
<Dataset_Publisher>PANGAEA</Dataset_Publisher>
<Data_Presentation_Form>Dataset</Data_Presentation_Form>
<Online_Resource>https://doi.pangaea.de/10.1594/PANGAEA.973697</Online_Resource>
</Data_Set_Citation>
<Personnel>
<Role>Investigator</Role>
<First_Name>Paula Luiza</First_Name>
<Last_Name>Fraga-Ferreira</Last_Name>
<Email>paulafragaferreira@gmail.com</Email>
</Personnel>
<Discipline>
<Discipline_Name>Earth Science</Discipline_Name>
</Discipline>
<Parameters>
<Detailed_Variable>DEPTH, sediment/rock</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Productivity index</Detailed_Variable>
</Parameters>
<ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
<Keyword>112-680A</Keyword>
<Keyword>Anoxia</Keyword>
<Keyword>Drilling/drill rig</Keyword>
<Keyword>isotope composition</Keyword>
<Keyword>Leg112</Keyword>
<Keyword>Paleooceanography</Keyword>
<Keyword>Sediment</Keyword>
<Source_Name>
<Long_Name>Joides Resolution</Long_Name>
</Source_Name>
<Temporal_Coverage>
<Start_Date>1986-11-05</Start_Date>
<Stop_Date>1986-11-05</Stop_Date>
</Temporal_Coverage>
<Data_Set_Progress>Complete</Data_Set_Progress>
<Spatial_Coverage>
<Southernmost_Latitude>-11.065</Southernmost_Latitude>
<Northernmost_Latitude>-11.065</Northernmost_Latitude>
<Westernmost_Longitude>-78.07783</Westernmost_Longitude>
<Easternmost_Longitude>-78.07783</Easternmost_Longitude>
<Minimum_Depth>0.23 m (DEPTH, sediment/rock)</Minimum_Depth>
<Maximum_Depth>26.11 m (DEPTH, sediment/rock)</Maximum_Depth>
</Spatial_Coverage>
<Access_Constraints>unrestricted</Access_Constraints>
<Use_Constraints>CC-BY-4.0: Creative Commons Attribution 4.0 International</Use_Constraints>
<Data_Set_Language>English</Data_Set_Language>
<Data_Center>
<Data_Center_Name>
<Short_Name>PANGAEA</Short_Name>
<Long_Name>Data Publisher for Earth &amp; Environmental Science</Long_Name>
</Data_Center_Name>
<Data_Center_URL>https://www.pangaea.de/</Data_Center_URL>
<Personnel>
<Role>Data Center Contact</Role>
<First_Name>Michael</First_Name>
<Last_Name>Diepenbroek</Last_Name>
<Email>info@pangaea.de</Email>
<Contact_Address>
<Address>Leobener Str.</Address>
<City>Bremen</City>
<Province_or_State>Bremen</Province_or_State>
<Postal_Code>28359</Postal_Code>
<Country>Germany</Country>
</Contact_Address>
</Personnel>
</Data_Center>
<Distribution>
<Distribution_Media>online</Distribution_Media>
<Distribution_Size>82 data points</Distribution_Size>
<Distribution_Format>text/tab-separated-values</Distribution_Format>
</Distribution>
<Reference>Fraga-Ferreira, Paula Luiza; Siebert, Christopher; Lehmann, Moritz F; Frank, Martin; Scholz, Florian (2026): Pliocene–Pleistocene Redox Evolution of the Peruvian Margin: A Multi‐Proxy Approach. Paleoceanography and Paleoclimatology, 41(2), e2025PA005301, https://doi.org/10.1029/2025PA005301</Reference>
<Reference>Fraga-Ferreira, Paula Luiza (2024): Elemental and isotopic data from from ODP Hole 112-680A, Peruvian Margin [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.973695</Reference>
<Reference>Gueguen, Bleuenn; Reinhard, Christopher T; Algeo, Thomas J; Peterson, Larry C; Nielsen, Sune G; Wang, Xiangli; Rowe, Harry; Planavsky, Noah J (2016): The chromium isotope composition of reducing and oxic marine sediments. Geochimica et Cosmochimica Acta, 184, 1-19, https://doi.org/10.1016/j.gca.2016.04.004</Reference>
<Reference>Schrader, Hans-Jürgen; Sorknes, Ragnhild (1991): Peruvian coastal upwelling: Late Quaternary productivity changes revealed by diatoms. Marine Geology, 97(3-4), 233-249, https://doi.org/10.1016/0025-3227(91)90118-N</Reference>
<Reference>Suess, Erwin; von Huene, Roland; et al. (1988): Proceedings of the Ocean Drilling Program, 112 Initial Reports. Proceedings of the Ocean Drilling Program, Ocean Drilling Program, 112, 1015 pp, https://doi.org/10.2973/odp.proc.ir.112.1988</Reference>
<Summary>This data consists of productivity from sediments collected during the ODP Expedition 112m borehole 680A at the Peruvian Margin. Depths are from samples analyzed in Gueguen et al. (2016) and in https://doi.pangaea.de/10.1594/PANGAEA.973695. Productivity was interpolated to the depths using a qualitative curve published by Schrader and Sorknes (1991). Values are qualitative and dimensionless. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.973697"!</Summary>
<Related_URL>
<URL>https://doi.org/10.1016/0025-3227(91)90118-N</URL>
<Description>Peruvian coastal upwelling: Late Quaternary productivity changes revealed by diatoms</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.1016/j.gca.2016.04.004</URL>
<Description>The chromium isotope composition of reducing and oxic marine sediments</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.1029/2025PA005301</URL>
<Description>Pliocene–Pleistocene Redox Evolution of the Peruvian Margin: A Multi‐Proxy Approach</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.2973/odp.proc.ir.112.1988</URL>
<Description>Proceedings of the Ocean Drilling Program, 112 Initial Reports</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.pangaea.de/10.1594/PANGAEA.973695</URL>
<Description>Elemental and isotopic data from from ODP Hole 112-680A, Peruvian Margin</Description>
</Related_URL>
<Related_URL>
<URL>https://www-odp.tamu.edu:443/resolutn.html</URL>
<Description>Joides Resolution</Description>
</Related_URL>
<Metadata_Name>DIF</Metadata_Name>
<Metadata_Version>9.4</Metadata_Version>
<DIF_Creation_Date>2024-12-03</DIF_Creation_Date>
<Last_DIF_Revision_Date>2026-05-07</Last_DIF_Revision_Date>
</DIF>
